* {
    -webkit-font-smoothing: antialiased;
    -webkit-overflow-scrolling: touch;
    -webkit-tap-highlight-color: rgba(0,0,0,0);
    -webkit-text-size-adjust: none;
    -webkit-touch-callout: none;
    box-sizing: border-box;
  }
  body:not(.ready) {
    overflow: hidden;
  }
  body:not(.ready) [data-cloak],
  body:not(.ready) .app-nav,
  body:not(.ready) > nav {
    display: none;
  }
  div#app {
    font-size: 30px;
    font-weight: lighter;
    margin: 40vh auto;
    text-align: center;
  }
  div#app:empty::before {
    content: 'Loading...';
  }
  img.emoji {
    height: 1.2em;
    vertical-align: middle;
  }
  span.emoji {
    font-family: "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    font-size: 1.2em;
    vertical-align: middle;
  }
  .progress {
    background-color: #000;
    background-color: var(--theme-color, #000);
    height: 2px;
    left: 0px;
    position: fixed;
    right: 0px;
    top: 0px;
    transition: width 0.2s, opacity 0.4s;
    width: 0%;
    z-index: 999999;
  }
  .search a:hover {
    color: #000;
    color: var(--theme-color, #000);
  }
  .search .search-keyword {
    color: #000;
    color: var(--theme-color, #000);
    font-style: normal;
    font-weight: bold;
  }
  html,
  body {
    height: 100%;
  }
  body {
    -moz-osx-font-smoothing: grayscale;
    -webkit-font-smoothing: antialiased;
    color: #000;
    font-family: 'Source Sans Pro', 'Helvetica Neue', Arial, sans-serif;
    font-size: 15px;
    letter-spacing: 0;
    margin: 0;
    overflow-x: hidden;
  }
  img {
    max-width: 100%;
  }
  a[disabled] {
    cursor: not-allowed;
    opacity: 0.6;
  }
  kbd {
    border: solid 1px #ccc;
    border-radius: 3px;
    display: inline-block;
    font-size: 12px !important;
    line-height: 12px;
    margin-bottom: 3px;
    padding: 3px 5px;
    vertical-align: middle;
  }
  li input[type='checkbox'] {
    margin: 0 0.2em 0.25em 0;
    vertical-align: middle;
  }
  .app-nav {
    margin: 25px 60px 0 0;
    position: absolute;
    right: 0;
    text-align: right;
    z-index: 10;
  /* navbar dropdown */
  }
  .app-nav.no-badge {
    margin-right: 25px;
  }
  .app-nav p {
    margin: 0;
  }
  .app-nav > a {
    margin: 0 1rem;
    padding: 5px 0;
  }
  .app-nav ul,
  .app-nav li {
    display: inline-block;
    list-style: none;
    margin: 0;
  }
  .app-nav a {
    color: inherit;
    font-size: 16px;
    text-decoration: none;
    transition: color 0.3s;
  }
  .app-nav a:hover {
    color: #000;
    color: var(--theme-color, #000);
  }
  .app-nav a.active {
    border-bottom: 2px solid #000;
    border-bottom: 2px solid var(--theme-color, #000);
    color: #000;
    color: var(--theme-color, #000);
  }
  .app-nav li {
    display: inline-block;
    margin: 0 1rem;
    padding: 5px 0;
    position: relative;
    cursor: pointer;
  }
  .app-nav li ul {
    background-color: #fff;
    border: 1px solid #ddd;
    border-bottom-color: #ccc;
    border-radius: 4px;
    box-sizing: border-box;
    display: none;
    max-height: calc(100vh - 61px);
    overflow-y: auto;
    padding: 10px 0;
    position: absolute;
    right: -15px;
    text-align: left;
    top: 100%;
    white-space: nowrap;
  }
  .app-nav li ul li {
    display: block;
    font-size: 14px;
    line-height: 1rem;
    margin: 0;
    margin: 8px 14px;
    white-space: nowrap;
  }
  .app-nav li ul a {
    display: block;
    font-size: inherit;
    margin: 0;
    padding: 0;
  }
  .app-nav li ul a.active {
    border-bottom: 0;
  }
  .app-nav li:hover ul {
    display: block;
  }
  .github-corner {
    border-bottom: 0;
    position: fixed;
    right: 0;
    text-decoration: none;
    top: 0;
    z-index: 1;
  }
  .github-corner:hover .octo-arm {
    animation: octocat-wave 560ms ease-in-out;
  }
  .github-corner svg {
    color: #fff;
    fill: #000;
    fill: var(--theme-color, #000);
    height: 80px;
    width: 80px;
  }
  main {
    display: block;
    position: relative;
    width: 100vw;
    height: 100%;
    z-index: 0;
  }
  main.hidden {
    display: none;
  }
  .anchor {
    display: inline-block;
    text-decoration: none;
    transition: all 0.3s;
  }
  .anchor span {
    color: #000;
  }
  .anchor:hover {
    text-decoration: underline;
  }
  .sidebar {
    border-right: 1px solid rgba(0,0,0,0.07);
    overflow-y: auto;
    padding: 40px 0 0;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    transition: transform 250ms ease-out;
    width: 300px;
    z-index: 20;
  }
  .sidebar > h1 {
    margin: 0 auto 1rem;
    font-size: 1.5rem;
    font-weight: 300;
    text-align: center;
  }
  .sidebar > h1 a {
    color: inherit;
    text-decoration: none;
  }
  .sidebar > h1 .app-nav {
    display: block;
    position: static;
  }
  .sidebar .sidebar-nav {
    line-height: 2em;
    padding-bottom: 40px;
  }
  .sidebar li.collapse .app-sub-sidebar {
    display: none;
  }
  .sidebar ul {
    margin: 0 0 0 15px;
    padding: 0;
  }
  .sidebar li > p {
    font-weight: 700;
    margin: 0;
  }
  .sidebar ul,
  .sidebar ul li {
    list-style: none;
  }
  .sidebar ul li a {
    border-bottom: none;
    display: block;
  }
  .sidebar ul li ul {
    padding-left: 20px;
  }
  .sidebar::-webkit-scrollbar {
    width: 4px;
  }
  .sidebar::-webkit-scrollbar-thumb {
    background: transparent;
    border-radius: 4px;
  }
  .sidebar:hover::-webkit-scrollbar-thumb {
    background: rgba(136,136,136,0.4);
  }
  .sidebar:hover::-webkit-scrollbar-track {
    background: rgba(136,136,136,0.1);
  }
  .sidebar-toggle {
    background-color: transparent;
    background-color: rgba(255,255,255,0.8);
    border: 0;
    outline: none;
    padding: 10px;
    position: absolute;
    bottom: 0;
    left: 0;
    text-align: center;
    transition: opacity 0.3s;
    width: 284px;
    z-index: 30;
    cursor: pointer;
  }
  .sidebar-toggle:hover .sidebar-toggle-button {
    opacity: 0.4;
  }
  .sidebar-toggle span {
    background-color: #000;
    background-color: var(--theme-color, #000);
    display: block;
    margin-bottom: 4px;
    width: 16px;
    height: 2px;
  }
  body.sticky .sidebar,
  body.sticky .sidebar-toggle {
    position: fixed;
  }
  .content {
    padding-top: 60px;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 300px;
    transition: left 250ms ease;
  }
  .markdown-section {
    margin: 0 auto;
    max-width: 80%;
    padding: 30px 15px 40px 15px;
    position: relative;
  }
  .markdown-section > * {
    box-sizing: border-box;
    font-size: inherit;
  }
  .markdown-section > :first-child {
    margin-top: 0 !important;
  }
  .markdown-section hr {
    border: none;
    border-bottom: 1px solid #eee;
    margin: 2em 0;
  }
  .markdown-section iframe {
    border: 1px solid #eee;
  /* fix horizontal overflow on iOS Safari */
    width: 1px;
    min-width: 100%;
  }
  .markdown-section table {
    border-collapse: collapse;
    border-spacing: 0;
    display: block;
    margin-bottom: 1rem;
    overflow: auto;
    width: 100%;
  }
  .markdown-section th {
    border: 1px solid #ddd;
    font-weight: bold;
    padding: 6px 13px;
  }
  .markdown-section td {
    border: 1px solid #ddd;
    padding: 6px 13px;
  }
  .markdown-section tr {
    border-top: 1px solid #ccc;
  }
  .markdown-section tr:nth-child(2n) {
    background-color: #f8f8f8;
  }
  .markdown-section p.tip {
    background-color: #f8f8f8;
    border-bottom-right-radius: 2px;
    border-left: 4px solid #f66;
    border-top-right-radius: 2px;
    margin: 2em 0;
    padding: 12px 24px 12px 30px;
    position: relative;
  }
  .markdown-section p.tip:before {
    background-color: #f66;
    border-radius: 100%;
    color: #fff;
    content: '!';
    font-family: 'Dosis', 'Source Sans Pro', 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    font-weight: bold;
    left: -12px;
    line-height: 20px;
    position: absolute;
    height: 20px;
    width: 20px;
    text-align: center;
    top: 14px;
  }
  .markdown-section p.tip code {
    background-color: #efefef;
  }
  .markdown-section p.tip em {
    color: #000;
  }
  .markdown-section p.warn {
    background: rgba(0,0,0,0.1);
    border-radius: 2px;
    padding: 1rem;
  }
  .markdown-section ul.task-list > li {
    list-style-type: none;
  }
  body.close .sidebar {
    transform: translateX(-300px);
  }
  body.close .sidebar-toggle {
    width: auto;
  }
  body.close .content {
    left: 0;
  }
  @media print {
    .github-corner,
    .sidebar-toggle,
    .sidebar,
    .app-nav {
      display: none;
    }
  }
  @media screen and (max-width: 768px) {
    .github-corner,
    .sidebar-toggle,
    .sidebar {
      position: fixed;
    }
    .app-nav {
      margin-top: 16px;
    }
    .app-nav li ul {
      top: 30px;
    }
    main {
      height: auto;
      min-height: 100vh;
      overflow-x: hidden;
    }
    .sidebar {
      left: -300px;
      transition: transform 250ms ease-out;
    }
    .content {
      left: 0;
      max-width: 100vw;
      position: static;
      padding-top: 20px;
      transition: transform 250ms ease;
    }
    .app-nav,
    .github-corner {
      transition: transform 250ms ease-out;
    }
    .sidebar-toggle {
      background-color: transparent;
      width: auto;
      padding: 30px 30px 10px 10px;
    }
    body.close .sidebar {
      transform: translateX(300px);
    }
    body.close .sidebar-toggle {
      background-color: rgba(255,255,255,0.8);
      transition: 1s background-color;
      width: 284px;
      padding: 10px;
    }
    body.close .content {
      transform: translateX(300px);
    }
    body.close .app-nav,
    body.close .github-corner {
      display: none;
    }
    .github-corner:hover .octo-arm {
      animation: none;
    }
    .github-corner .octo-arm {
      animation: octocat-wave 560ms ease-in-out;
    }
  }
  @keyframes octocat-wave {
    0%, 100% {
      transform: rotate(0);
    }
    20%, 60% {
      transform: rotate(-25deg);
    }
    40%, 80% {
      transform: rotate(10deg);
    }
  }
  section.cover {
    position: relative;
    align-items: center;
    background-position: center center;
    background-repeat: no-repeat;
    background-size: cover;
    min-height: 100vh;
    width: 100%;
    display: none;
  }
  section.cover.show {
    display: flex;
  }
  section.cover.has-mask .mask {
    background-color: #fff;
    opacity: 0.8;
    position: absolute;
    top: 0;
    bottom: 0;
    width: 100%;
  }
  section.cover .cover-main {
    flex: 1;
    margin: 0 16px;
    text-align: center;
    position: relative;
  }
  section.cover a {
    color: inherit;
    text-decoration: none;
  }
  section.cover a:hover {
    text-decoration: none;
  }
  section.cover p {
    line-height: 1.5rem;
    margin: 1em 0;
  }
  section.cover h1 {
    color: inherit;
    font-size: 2.5rem;
    font-weight: 300;
    margin: 0.625rem 0 2.5rem;
    position: relative;
    text-align: center;
  }
  section.cover h1 a {
    display: block;
  }
  section.cover h1 small {
    bottom: -0.4375rem;
    font-size: 1rem;
    position: absolute;
  }
  section.cover blockquote {
    font-size: 1.5rem;
    text-align: center;
  }
  section.cover ul {
    line-height: 1.8;
    list-style-type: none;
    margin: 1em auto;
    max-width: 500px;
    padding: 0;
  }
  section.cover .cover-main > p:last-child a {
    border-color: #000;
    border-color: var(--theme-color, #000);
    border-radius: 2rem;
    border-style: solid;
    border-width: 1px;
    box-sizing: border-box;
    color: #000;
    color: var(--theme-color, #000);
    display: inline-block;
    font-size: 1.05rem;
    letter-spacing: 0.1rem;
    margin: 0.5rem 1rem;
    padding: 0.75em 2rem;
    text-decoration: none;
    transition: all 0.15s ease;
  }
  section.cover .cover-main > p:last-child a:last-child {
    background-color: #000;
    background-color: var(--theme-color, #000);
    color: #fff;
  }
  section.cover .cover-main > p:last-child a:last-child:hover {
    color: inherit;
    opacity: 0.8;
  }
  section.cover .cover-main > p:last-child a:hover {
    color: inherit;
  }
  section.cover blockquote > p > a {
    border-bottom: 2px solid #000;
    border-bottom: 2px solid var(--theme-color, #000);
    transition: color 0.3s;
  }
  section.cover blockquote > p > a:hover {
    color: #000;
    color: var(--theme-color, #000);
  }